Based on https://gist.github.com/PaulMColeman/e7ef82e05035b24300d2ea1954527f10 Changes: - Add ca-certificates for rustup HTTPS downloads - Install Rust and WASM toolchain for frontend WebAssembly compilation - Copy config directory needed for FLUXER_CONFIG env var - Set FLUXER_CONFIG so rspack can derive API endpoints - Update ENTRYPOINT to target @fluxer/server package specifically - Fix .dockerignore to allow build scripts and locale files These fixes address the most critical build issues documented in the community guide for self-hosting Fluxer.